setcookie("Cookie_name", "Cookie_value", time()+3600, "/", ".yourdomain.com");  // expires in 3600 seconds = 1 hour

echo $_COOKIE["Cookie_name"];   // echo the cookie value

session_start();
$_SESSION['session_name'] = "This is a value set to session_name";

session_start();
echo $_SESSION['session_name'];

echo date('l dS \of F Y h:i:s A');   // echos  Monday 15th of August 2005 03:12:46 PM

$af=file("a_text_file.txt");

foreach($af as $line)
{
echo "$line"; // shows all the content in the file $af line by line
}